Improvement in tenoning-machines



2 Sheets-Sheet 1.

H. BRAND'.

TENONING-MACHINE.

Patented Nov. 2,

No.mmse. Y

Wineases.'

NJ'ETERS, PHOTCLLITHOGRAFNE. WASHVNGYON, D. C.

=2 Sheets-Sheet. f H. BRAND.

Mmmm-MACHINE. Nc.169,336. Patented Nov. 2,1875.'

Maf/M 'the labor of operating the carriage.

'dNrrED l.'.Srnfriiis 'PATENT HENRY. BRAND, OF ST. PAUL, MINNESOTA.

IMPRCVEMENT IN TENONING-MACHINES. t

Specification forming part of Letters Patent No. l @$9,336. datedNovember 2, 1875 application led March 24, 1875.

To all whom @t may concern:

Be it known that I, HENRY BRAND, of St. Paul,lcounty of Ramsey, State ofMinnesota.

have invented a new and useful Improvement j in rIenoning-ll/Iachine, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying. drawing, making part of this specication,in Which- Figure lis a plan or top view of my improved machine. Fig. 2is an end elevation of the same, and Figs. 3, 4, 5, 6, 7, 8, 9, 10, andll represent details or parts of the machine hereinafter described. l

Similar letters of reference denotecorrespending parts of the machine inall of the figures Where used.

The invention consists in supporting the table or carriage, or one endthereof, upon pivoted vibrating segments or parallel links, the swingingends of Which are formed i'n arcs of circles, of which the pivots uponwhich the arms swing are the centers, in such manner that the carriageresting on said vibrating segments will move in right lines, therebyobviatng to a great extent the friction due to the movement of theearriage'upon the tixed ways ordinarily used, and greatly'diminishingThe invention further consists in a novel construction of thecutter-head itself, as hereinafter described. v Y v In the accompanyingdrawings, A Al represent an upright rectangular frame, of any suitableconstruction, and B is the reciprocating carriage mounted thereon, alsomade in any usual or preferred manner. The carriage B is supported atits rear end, or that end opposite to the cutter-head, (or it may be atboth ends, if preferred,) upon parallel links G C, pivoted at theirlower ends at c to the uprights or posts A. The upper end of theselinks, expanded in width at C', are formed each in the arc of a circleof Which'its pivot a is the center, and move in grooved guiding platesor ways b, secured to the lower surface of the table B, and which serveto give direction and steadiness to the movement of the table, whichmoves on 'the face of said segments as on the periphery of large wheelshaving lixed pivotal centers. The adjacent ends of these segments areconnected with each other by a pivoted link, D, which is also pivotedmidway of its length to a pendent bracket, d, attached to the table,said link serving to maintain the vibrating segments in proper Workingrelation to each other and to the table, and also to limit their throw.These pivoted segments may be applied at both ends of the carriage ortable, but for giving precision of movement I prefer to employ, at thel'cutter-head end, aninverted V-shape or knifeedged guiding-rail, E,matching correspondingly-grooved rails or guides c, secured to the lowerface of the table, this form diminishing the friction, while at the sametime it prevents deflection in the line of movement of the ta ble. Ifpreferred, small, grooved frictionrollers may be applied to the table inlieu of the fixed guides c. An angle-iron, el, engaging with' a lip orshoulder at e2,I on the guiderail E, holds the vcarriage firmly down onsaid rail. In suitable guidingbrackets f, attached to the frame, ismounted a vertical carriage, F, consisting either of an upright angularplate, as shown, or of a frame of any preferred construction, upon theupper end of which, in bearings g, is mounted the rlongitudinal shaft G,which carries the head, and to which motion is communicated in anysuitable way. The rear face of the plate or frame F has a perforatedbracket or ear, h, formed upon or Y attached to it, in which ascrew-thread is cut matching a screw formed on a vertical shaft, H,mounted and rotating in bearings in the frame-bars A', and by therotation of which a vertical movement is imparted to the .frame F foradjusting the shaft G and cutter-head as desired. The cutter-head Ishown in Figs. 1 and 5, and in detail and sectional views, Figs. 6, 7,8. 9,10, and 11, is constructed as follows: Upon ille' shaft G is keyeda collar-plate, J, and outside of said collar the shaft is feathered atg', (see Fig. 8,) and has a sleeve, K, placed upon it, said sleeve beinggrooved to match, and rotating with said shaft. The periphery of thissleeve has a right and left handed screw formed upon it, adapting. it to'Y receive internally-threaded rings L L', the-V relative rotation ofwhich to each other is prevented by interlocking pins or `spurs l, andthese, in connection with the feather g and pins j on the collar J,entering holes in the sleeve K,

jg 1 i if `"uname electuall y prevent any rotary movement of the partsofV `thefhead tol each other "when in `place ontheshaft G. These ringsLL' arepassed n wuponthe sleeve Kfrom its opposite ends, and

are drawn together or into the desired' proximity by the action of theright and left hand screws when the slee'veisw` rotated, the pins Lpreventing ythe relative rotation .of the rings. The rings L L' haveeach a rabbet or shoulder formed at their outer falces atmto receive theannular saws M, which are clamped in place between the rings L L' andthe fixed and removable collars J J by a clampingnut,N, on

'the end of the shaft G. The rings L L' have perforated lugs or ears Z'formed upon them, in which the cutter arms or Shanks Parepivotedpthesejarms reachingoutjto or near to the periphery of thesaws M. These cutter-arms are expanded in Width attheir outer ends, sothatthose upouone ring shall overlap' those .of` the other ring, asshown in Figs.` l and 5,

andi are'bent into the form,\substantially as shown iu Figs. 9 and 10,for bringing the outercutting-face into or nearly; into linecoincidentwitlrthe circular path described thereby. i Thiscutting-edge may beformed directly upon the ends of the pivoted arms P, but `I i prefer tomake them separately, as shown in Figs.-5 and'lO at p', in Whichcaseaisoclfet or e depression is `formed in the outer endsof the arms fortheir reception, and the detachable cuttersor cutter-lips p' are securedtherein by means of boltsl or set-screws, as shown. t

Under this latter construction y the cuttinglips p' can'` be readilyremoved for sharpening, and for them substitution of new onesA when Wornout or broken. They can be slotted for making themadjustable, ifdesired,but it is preferred toeifect` thisjadjustment by means ofscrew-rods q, pivote-.d` to lugs `or ears r formed on the rear face ofthe armsP, and

passing through lugs or ears sionthe rings L y `L', as shown in Fig. `9.The rods q, and with them the' cutters p', are set in or out, as desired, by meansof jam-nuts t on the rods q, on opposite` sides of thelugs s; The saws M (see Fig. lllmay be of any usualor preferredconstruction, and by simply removing the cutter-hea sa\v,`.the carfmachine.

gage` `aar, U, is pivoted to the carriage-frame bar B', adjacent to thecutter-head, and the outer swingingiendoff'said bar is held ,by a clamp,V, or other equivalent device for holding said bar, at any desired angleto the path of the carriage tbrdetermining the angle of 3 i Theperipheriesof the the tchou-shoulder.` segments C may be knife-edged orVshaped, matchingcorrespondinggrooves or guides on; the lower face ofthe carriage, and guide or steadying straps or bars may be used forpre-` 3 i venting lateral deflection of the segments,

thereby insuring precision in the movements ot' said carriage. i i

Having now described my invention, `what` i y I claim, and desire t0securel by Letters `Batent is- 1. The pivoted vibrating segment C',c on`structed and applied to the reciprocating carria-ge B, substantially asdescribed, whereby` i said carriage is supported by and adapted :to bemovedin right lines upon saidsegments,` for the purpose andsubstantially as set forth.

i 2. rIhe cutter-head sleeve K, provided `with the right and lefthandscrews, as described, in combination with the rings L L', to whichthe cutters are attached, substantially as de; scribed. i y

The cutter-arms P, hngedlto the rings L i L', in `combination with theadjusting-rods q,-

arranged and operating substantially asdescribed.

`4. The cutter-heads, constructed substan-I tially as described-@that isto say, havingxthe sawsM M and the intermediate sleeve` and adjustablecutters, arranged and operating substantially as described.

In testimony whereof `I have hereunto set my hand., A

HENRY BRAND.

Witnesses:

J. H. ELWARD,

E. S. CHITTENDEN.

@-fndusing a single" circular` y, ,n cbnstructeduas described, @1jt/'1bn sawing lumber' instead `ot as l i Upon the carriageB a

